Q. Name the only hormone in plant which is found in gaseous form?

A
Ethylene
B
Auxin
C
Gibberlin
D
Cytokinin
Solution:

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Ethylene serves as a hormone in plants. It acts at trace levels throughout the life of the plant by stimulating or regulating the ripening of fruit, the opening of flowers, and the abscission (or shedding) of leaves.

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